Internal-combustion engine.



W. E. VhH PLANCK.

INTERNAL COMBUSTION ENGINE.-

APPLICATION FILED AUG.2. 1916.

1,245,642. I Patented Nov. 6, 1917.

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Inventor William Ever Plank,

Has Attorneg.

UNITED STA s PATENT OFFICE.

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v a cificati'on.

- e present invention relates to internal combustion engines of the high compression type; that is, of the type in which, on the compression stroke, pure air is first compressed to a pressure such that its temperature-is above that of the igniting point of the fuel, after which the charge of fuel is injected by a blast of air. In connection with such engines a fuel injector is provided to which the fuel is supplied in measured quantities by a pump, the valve of the fuel injector being opened at the Proper time to permit the fuel" to be blown into the combustion space of the cylinder.

The-present invention relates particularly to an engine ofthis type in which the fuel injector is located on the head of the cylinder and has for its object to provide an improved arrangement in which the fuel inector will be efiiciently cooled by the. coolmg water for the engine cylinder or cylinoers. Y

For a consideration of whatI believe to be novel and my invention, attention is dirooted to the accompanying specification and the claims appended thereto.

In the accompanying drawing, Figure 1 is a vertical section through a cylinder structure embodying my invention; Fig. 2 is a similar section taken at right angles to Fig. 1,.and Fig. 3 is a top plan view looking 1n the direction of the axis of the cylinders and with the fuel injector and a part of the water jacket removed.

The invention ishown as applied to a cylinder structure of a V-type of engine in which the cylinders are arranged in pairs, the two cylinders of each pair being in parallel relation to each other and having a common combustion space. Such an engine is shown in my 31331103131011, Serial No. 112 845 filed of even ate herewith.

, Iieferring to the drawing, 5 indicates the base or frame. of the engine, and and 7 Specification of ietters Patent. Patented Nov, 6, 191'},

Applicationjfi led August2,1916. Serial No. 112,848.

two parallel cylinders in which the pistons 8 and 9 reciprocate. The pistons move toward and away from the common combustion spacelO in unison with each other and are connected to a crank shaft (not shown) by rods 11 and 12. The pistons control scavengin and exhaust ports (not shown) in the cylinder walls, as is well understood. The enls of the pistons are cone-shaped and the top wall of the combustion space, which is formed integral withthe outer cylinder walls, may be considered as being formed of a flattened cone, thus forming an oblong cone-shaped combustion chamber. Fig. 1

shows a section of it the long way and Fig.

2 a section of it crosswise. Re errin to Fig. 1, it will be seen that the two en s of the oblong chamber, as indicated at 13, slope up at about the same angle as the end of the pistons for a distance, after whichthey are more acute, as indicated at 14. The side walls at the point of the section of Fig. 2-

are substantially straight and gradually merge into the end walls.

'At the apex of the conical-she ed combustion chamber, a flat surface as indicated.

at 15 (Fig. 3) is provided, at the center of which is an opening 16 which connects with the combustion chamber 10, and seated on I this surface is the fuel injector. It comprises a body member 17, formed integral with whichis an annular boss 18 which projects into the opening 16, and a secondboss 19 whichextends across the body member.

The body member is also royided with an annular flange 20. Extending down through the boss 19 body 17 and boss 18, is an axial opening 21 at the inner end of which is a flange or ledge 22. In this opening are located the various parts of the fuel injector mechanism, the body 17 and two bosses 18 and 19 forming in substance the casing for them. This fuel valve mechanism may, so far as the present invention is concerned, be of any suitable: structure. In the present instance it is shown as being'of the general type disclosed in the patent to Hermann Lemp No. 1,157 ,315. 2 1 indicates the flame plate of the fuel injector and 25 the valve seat against which the head of the fuel valve 26. Seats.- 27 indicates the sprin which holdsithe fuel'valve 26 seated, an 28 the half 42 of it.

' ciple of operation actuating lever which is pivoted on an arm 29. The operation of a fuel injector of this type is well understood and needs no further description. The fuel injector is held in position on the surface 15, which forms a seat for it, by means of suitable bolts and 31 which pass down through the body of the injector and thread into openings 32 formed in earsor lugs 33 which are an integral part of the wall forming the surface 15. The bolts 31, also serve to hold the frame 34 which forms apart of the fuel injector in position.

Cast integral with the cylinder structure is the lower half 40, of the water jacket and fastened to this by bolts 41, is the upper The upper half extends well above and over the top or head of the cylinder structure-and terminates in an annular flange 43, w ch surrounds the body 17 of the fuel injector and has a seat 44 in it between which and the flange 20 is arranged a suitable rubber packing ring 45 to form a water tight joint. 46 indicates the opening through which the cooling water enters the water jacket and 47 the outlet for it.

49, indicates a portion of the scavenging air receiver and 50 are guides for the lower ends of the pistons. Between the guides 50 and the cylinders 6 and 7 are oil scraping rings 51 for scraping back lubricant to prevent an unduly large amount getting up to the piston heads.

The body 17 of the fuel injector is of lar er diameter than the surface 15 upon WlllCh it seats so that it projects over it, and except for where the lugs 33 are located this pro ecting portion is in direct contact with the cooling water. The extent to which the bottom of the body 17 is in contact with the cooling water is indicated in Fig. 3 where the dot and dash circle A indicates the position of the periphery of the body. ,By this arrangement, it will be seen, the cooling water circulates up over the head of the cylinder structure and against the bottom of the body of the fuel injector so as to efliciently cool it.

The form'of combustion chamber shown and described is not claimed herein as it forms the subject matter of the application of Henry G. Chatain, Serial No. 121,081 filed Sept. 19, 1916.

In accordance with the provisions of the patent statutes, I have described the prim of my invention, together with the apparatus which I now consider to represent the best embodiment thereof but I desire to have it understood that the apparatus shown is only illustrative, and that the invention can be carried out by other means.

What I claim as new and desire to secure by Letters Patent of the United States, is:

I 1. In an internal combustion engine, the combination of a cylinder, a fuel injector located onthe head of the cylinder with its body portion fastened thereto, and a water jacket for the cylinder which extends up around the body portlon of the fuel injector and forms a water tight connection therewith whereby the cooling water for the cylinder will also act to cool the fuel injector.

2. In an internal combustion engine, the combination of a cylinder havin a cone shaped combustion chamber, a fue injector located at the apex of the cone with its body portion fixed directly thereto, and a water jacket for the cylinder which extends up over the top wall of the combustion chamber and terminates in a flange which surrounds the body portion of the fuel injector and has a water tight fit therewith, whereby the cooling water for the cylinder will also act to cool the fuel injector.

3. In an internal combustion engine, the combination of a cylinder structure comprising two cylinders arranged side by side and having a common combustion chamber, a fuel injector located on the head of the cylinder structure with its body fastened thereto, and a water jacket for the structure which extends up over the top of'it and has a water tight fit with the fuel injector body.

4. In an internal combustion engine, the combination of a cylinder structure comprising two cylinders arranged side by side and having a common combustion chamber, said combustion chamber being of conical form, a fuel injector located at the apex of the cone and fastened thereto, and a water jacket for the structure which extends over the top wall of it and terminates in a flange which surrounds the fuel injector and makes a water tight fit therewith, whereby the cooling water for the cylinder will also cool the fuel injector.

5. In an internal combustion engine, the combination of a cylinder provided at the central ortion of its head with a flat seat, a fuel injector havin a body of greater area than said seat an located thereon, and a water jacket for the c linder which extends up over the head 0 it and surrounds the fuel injector.

6. In an internal combustion engine, the combination of a cylinder structure having a head which forms a cone-shaped combustion chamber and is provided at the apex with a seat, a fuel injector having a body of greater area than said seat and fixed thereon whereby a portion of the bottom of the body is exposed, and a water jacket for the cylinder which extends up over the head of it and makes a fluid tight fit with the body so that the cooling water may circulate against the bottom of the fuel in ector body.

7 In an internal combustion engine, the combination of a cylinder having a flat seat on its head, a, fuel injector located on therewith whereby the cooling water for the head of the cylinder and engaging said the cylinder will also act to cool the fuel in-.

flat seat, said fuel injector having a body jector. v

of greater area than said seat, and a water In witness whereof, I have hereunto set 5 jacket for the cylinder which extends up my hand this 31st day of July, 1916.

around the body portion of the fuel injector and forms a water tight connection WILLIAM EVERETT YER PLANGK. 

